# EC Academy for iPhone vs Pettson's Inventions 4

The clearest difference is price: EC Academy for iPhone at Free against Pettson's Inventions 4's $4.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

EC Academy for iPhone is free to download; Pettson's Inventions 4 costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EC Academy for iPhone ships an update every 8 months, Pettson's Inventions 4 every 6 months. The most recent releases landed on November 10, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | EC Academy for iPhone | Pettson's Inventions 4 |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | — | **[4.8 (8 ratings)](https://appshunter.io/ios/app/pettsons-inventions-4/id6504173576/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 months** |
| Monetization | — | Paid |
| Size | 54 MB | 320 MB |
| Requires iOS | **11.4** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Lemon Systems GmbH](https://appshunter.io/developer/1248314736) | [Filimundus AB](https://appshunter.io/developer/468644481) |

## What reviewers say

### EC Academy for iPhone

[App page](https://appshunter.io/ios/app/ec-academy-for-iphone/id6468769905)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Pettson's Inventions 4

[App page](https://appshunter.io/ios/app/pettsons-inventions-4/id6504173576)

Explore a workshop and help Findus assist Pettson with a malfunctioning machine. Solve intricate inventions by finding hidden objects and placing them correctly to progress towards a solution. Features a kid-friendly interface with adjustable difficulty for engaging gameplay.

**Highlights:** 50 new inventions to solve, Search workshop for hidden objects, Drag and drop item placement, Adjustable difficulty levels, Kid-friendly interface, Original artwork

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EC Academy for iPhone free?

EC Academy for iPhone is free to download, with no in-app purchases.

### Is Pettson's Inventions 4 free?

Pettson's Inventions 4 costs $4.99, with no in-app purchases.

### Do EC Academy for iPhone or Pettson's Inventions 4 have ads?

Neither EC Academy for iPhone nor Pettson's Inventions 4 shows ads.

### Which is updated more often, EC Academy for iPhone or Pettson's Inventions 4?

EC Academy for iPhone ships an update every 8 months, and Pettson's Inventions 4 every 6 months. Most recently, EC Academy for iPhone was updated on November 10, 2026 and Pettson's Inventions 4 on November 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*